diff options
Diffstat (limited to 'camel/camel-io.c')
| -rw-r--r-- | camel/camel-io.c | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/camel/camel-io.c b/camel/camel-io.c deleted file mode 100644 index df831162ba..0000000000 --- a/camel/camel-io.c +++ /dev/null @@ -1,170 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * Authors: Jeffrey Stedfast <fejj@ximian.com> - * - * Copyright 2003 Ximian, Inc. (www.ximian.com) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Street #330, Boston, MA 02111-1307, USA. - * - */ - - -#ifdef HAVE_CONFIG_H -#include <config.h> -#endif - -#include <sys/time.h> -#include <sys/types.h> -#include <unistd.h> -#include <fcntl.h> -#include <errno.h> - -#include "camel-io.h" -#include "camel-operation.h" - - -#ifndef MAX -#define MAX(a,b) ((a) > (b) ? (a) : (b)) -#endif - -/* FIXME: should we trade out select() for a poll() instead? */ - -ssize_t -camel_read (int fd, char *buf, size_t n) -{ - ssize_t nread; - int cancel_fd; - - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { - do { - nread = read (fd, buf, n); - } while (nread == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - } else { - int errnosav, flags, fdmax; - fd_set rdset; - - flags = fcntl (fd, F_GETFL); - fcntl (fd, F_SETFL, flags | O_NONBLOCK); - - do { - FD_ZERO (&rdset); - FD_SET (fd, &rdset); - FD_SET (cancel_fd, &rdset); - fdmax = MAX (fd, cancel_fd) + 1; - - nread = -1; - if (select (fdmax, &rdset, 0, 0, NULL) != -1) { - if (FD_ISSET (cancel_fd, &rdset)) { - fcntl (fd, F_SETFL, flags); - errno = EINTR; - return -1; - } - - do { - nread = read (fd, buf, n); - } while (nread == -1 && errno == EINTR); - } else if (errno == EINTR) { - errno = EAGAIN; - } - } while (nread == -1 && (errno == EAGAIN || errno == EWOULDBLOCK)); - - errnosav = errno; - fcntl (fd, F_SETFL, flags); - errno = errnosav; - } - - return nread; -} - - -ssize_t -camel_write (int fd, const char *buf, size_t n) -{ - ssize_t w, written = 0; - int cancel_fd; - - if (camel_operation_cancel_check (NULL)) { - errno = EINTR; - return -1; - } - - cancel_fd = camel_operation_cancel_fd (NULL); - if (cancel_fd == -1) { - do { - do { - w = write (fd, buf + written, n - written); - } while (w == -1 && (errno == EINTR || errno == EAGAIN || errno == EWOULDBLOCK)); - - if (w > 0) - written += w; - } while (w != -1 && written < n); - } else { - int errnosav, flags, fdmax; - fd_set rdset, wrset; - - flags = fcntl (fd, F_GETFL); - fcntl (fd, F_SETFL, flags | O_NONBLOCK); - - fdmax = MAX (fd, cancel_fd) + 1; - do { - FD_ZERO (&rdset); - FD_ZERO (&wrset); - FD_SET (fd, &wrset); - FD_SET (cancel_fd, &rdset); - - w = -1; - if (select (fdmax, &rdset, &wrset, 0, NULL) != -1) { - if (FD_ISSET (cancel_fd, &rdset)) { - fcntl (fd, F_SETFL, flags); - errno = EINTR; - return -1; - } - - do { - w = write (fd, buf + written, n - written); - } while (w == -1 && errno == EINTR); - - if (w == -1) { - if (errno == EAGAIN || errno == EWOULDBLOCK) { - w = 0; - } else { - errnosav = errno; - fcntl (fd, F_SETFL, flags); - errno = errnosav; - return -1; - } - } else - written += w; - } else if (errno == EINTR) { - w = 0; - } - } while (w != -1 && written < n); - - errnosav = errno; - fcntl (fd, F_SETFL, flags); - errno = errnosav; - } - - if (w == -1) - return -1; - - return written; -} |